What does WH mean in UNCLASSIFIED

A water heater is an appliance that heats water to be used for various needs such as showering, cleaning dishes, and laundry.

A water heater works by transferring heat from one area to another. This is done through convection or the transfer of heat from one material to another by either radiative or conductive means.

The three main types of residential water heaters include traditional storage tank heaters, tankless on-demand heaters, and combination units called “heat pump” hybrid units.

Which type of fuel you choose will depend on your energy source availability and cost at your location. Generally speaking, electric models can be more efficient than gas models while natural gas models may be less expensive in some places. Additionally, if you are living off the grid you won't have the option to use an electric model and would require some sort of gas unit instead.

Yes, it's important to perform regular maintenance on your water heater in order to keep it operating efficiently and safely. This includes periodically checking for leaks or corrosion around the pipes leading away from the unit and flushing the tank of any sludge buildup in order to keep it free from obstructions which could lead to damage over time.